WIZA, Rajmund. Development of Agricultural Machinery Use in the Federal Republic of Germany in the Years 1945-1965. Studia Historiae Oeconomicae, [S. l.], v. 6, p. 101–114, 1972. DOI: 10.14746/sho.1972.06.1.007. Disponível em: https://pressto.amu.edu.pl/index.php/sho/article/view/57572. Acesso em: 20 oct. 2026.